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Re: zsh changes appended MANPATH value to prepended value

X-seq: zsh-users 30060
From: Eric Cook <llua@xxxxxxx>
To: zsh-users@xxxxxxx
Cc: injustsu@xxxxxxxxx
Subject: Re: zsh changes appended MANPATH value to prepended value
Date: Mon, 26 Aug 2024 18:37:32 -0400
Archived-at: <https://zsh.org/users/30060>
In-reply-to: <CAB=S_8+_95Cys679w_bdoKkJ-g6h4Yc7Y423sgJ8HqHegaggpQ@mail.gmail.com>
List-id: <zsh-users.zsh.org>
References: <CAB=S_8+_95Cys679w_bdoKkJ-g6h4Yc7Y423sgJ8HqHegaggpQ@mail.gmail.com>
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On 8/26/24 6:31 PM, Justin Su wrote:

I am using Ghostty terminal on macOS Sonoma. Ghostty appends itself to MANPATH on startup, so zsh inherits MANPATH as:

:/Applications/Ghostty.app/Contents/Resources/ghostty/../man

After zsh inits, MANPATH is:

/usr/share/man:/usr/local/share/man:/Applications/Ghostty.app/Contents/Resources/ghostty/../man:

That is, zsh changes MANPATH so that Ghostty is prepended, instead of appended.

This happens with no zsh user configuration. Please help me understand why this is happening, as I do not think this is correct behaviour.

Please cc me on all replies. Thanks in advance.


% grep -ri MANPATH Src
Src/init.c:    manpath  = mkarray(NULL);
Src/params.c:     **manpath,            /* $manpath     */
Src/params.c:IPDEF8("MANPATH", &manpath, "manpath", PM_TIED),
Src/params.c:IPDEF9("manpath", &manpath, "MANPATH", PM_TIED),

outside of making $manpath tied to $MANPATH, zsh doesn't do anything with MANPATH.
So it is indeed configuration related, possibly done by your os vendor.

Follow-Ups:
- Re: zsh changes appended MANPATH value to prepended value
  - From: Eric Cook

References:
- zsh changes appended MANPATH value to prepended value
  - From: Justin Su

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